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IEEEP370 Flip FIX-2 and minor improvements #698

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mhuser
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@mhuser mhuser commented Jun 11, 2022

Make IEEEP370 deembedding method use the labelling and numbering scheme recommended by the IEEEP370 standard.
The deembedding equation should be like this:
DUT = FIX-1.inv ** FIX-DUT-FIX ** FIX-2.flipped().inv

Also add minor improvements:

  • Add a verbose mode that plot NZC length and midpoint impedance determination, useful for diagnostic purpose
  • Add the possibility to use z-transform instead fft for very short structure (based on the Matlab code)

update docstring to IEEEP370 recommanded numbering scheme
@mhuser mhuser linked an issue Jun 11, 2022 that may be closed by this pull request
@github-actions github-actions bot added the Documentation Request/Improvement of the documentation label Jun 11, 2022
in the IEEEP repo, IEEEP370 NZC has the ability to use `s2z` and `z2s` instead ifft.

According to the commit that added this functionnality, it is intended to use with very short fixture that have not enough point in time domain,  e.g. a single point. In this case the impedance midpoint computation cannot give the expected results.
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mhuser commented Jun 11, 2022

@mhuser mhuser marked this pull request as ready for review June 11, 2022 15:31
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mhuser commented Jun 11, 2022

Should be review ready 😄

@mhuser mhuser merged commit 0cd53a0 into scikit-rf:master Jun 12, 2022
@mhuser mhuser deleted the IEEEP370-Flip-FIX-2-and-minor-improvements branch June 12, 2022 19:37
@jhillairet jhillairet mentioned this pull request Jun 19, 2022
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Flip FIX-2 numbering for IEEEP370 deembeding
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